EP0384278A2 - Procédé et dispositif pour appliquer des substances liquides, pâteuses ou plastiques sur un substrat - Google Patents

Procédé et dispositif pour appliquer des substances liquides, pâteuses ou plastiques sur un substrat Download PDF

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Publication number
EP0384278A2
EP0384278A2 EP90102857A EP90102857A EP0384278A2 EP 0384278 A2 EP0384278 A2 EP 0384278A2 EP 90102857 A EP90102857 A EP 90102857A EP 90102857 A EP90102857 A EP 90102857A EP 0384278 A2 EP0384278 A2 EP 0384278A2
Authority
EP
European Patent Office
Prior art keywords
substrate
cylinder
substances
coating
pasty
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90102857A
Other languages
German (de)
English (en)
Other versions
EP0384278B1 (fr
EP0384278A3 (fr
Inventor
Volker Ludwig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zweckform Buero Produkte GmbH
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0384278A2 publication Critical patent/EP0384278A2/fr
Publication of EP0384278A3 publication Critical patent/EP0384278A3/fr
Application granted granted Critical
Publication of EP0384278B1 publication Critical patent/EP0384278B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/003—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating incorporating means for heating or cooling the liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/10—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the liquid or other fluent material being supplied from inside the roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/001—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work incorporating means for heating or cooling the liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0254—Coating heads with slot-shaped outlet
    • B05C5/0258—Coating heads with slot-shaped outlet flow controlled, e.g. by a valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/0831—Machines for printing webs
    • B41F15/0836—Machines for printing webs by means of cylindrical screens or screens in the form of endless belts

Definitions

  • the invention relates to a method for applying liquid, pasty or plastic substances, in particular thermoplastics, to a substrate, the substance being melted, heated and applied to the substrate through an opening gap of a perforated cylinder, which is then lifted off the cylinder, and a device therefor.
  • Such a device is known for example from DE-OS 26 38 307.
  • the object of the present invention is to show further improvements in the application of the molten substance to the substrate and to have a favorable influence on the coating quality.
  • the cylinder is connected to an energy source and is itself designed as a heat source for the substance.
  • the cylinder which serves as a template for the coating, was exposed to heat at most from the outside.
  • the basic idea of the present invention is to design the cylinder itself as a heat source, it preferably being connected to a power source and thereby serving as resistance heating.
  • the heating of the cylinder can be controlled much more precisely, so that the effects of the heating of the cylinder on the coating itself can also be regulated.
  • the heating of the cylinder itself vaporizes a substantial proportion of the liquid which is in the coating substance, and even that the coating substance is "baked" or sintered. This significantly improves the quality of the coating and simplifies the process, since drying ovens can be omitted.
  • threads are formed to a much lesser extent when the coated substrate is lifted off the cylinder.
  • a sliding contact is preferably used to connect the metal cylinder to the power source.
  • the invention also covers the basic idea that after the coated substrate has been lifted off the cylinder itself, the threads between the coating and the cylinder are removed. On the one hand, this can be done mechanically, for example by cutting the threads.
  • a laser source that removes the threads without further difficulties appears to be particularly suitable here.
  • the laser also has the advantage, when it strikes the coated substrate, that it melts the surface of the coating drops and cross-links them better. This also significantly improves the quality of the coating.
  • a cylindrical lens can also be used, which produces a linear focus.
  • the coating of the coated substrate with an additional material web takes place only subsequently to the coating of the substrate, heat then having to be supplied to the coated substrate or the coating substance in order for it to be effective in connecting the material web.
  • the present invention also encompasses the idea that the coated substrate is covered with the material web immediately after it has been lifted off the cylinder, so that an additional operation of reheating or keeping warm is saved. For this purpose, it should prove to be the most favorable if the lifting roller itself is assigned a corresponding calender for feeding the material web.
  • a further improvement of the coating takes place in that the individual points are connected to one another in the point coating.
  • channels are arranged on the surface of the cylinder, which connect the corresponding openings for the spot coating to one another.
  • a particularly noteworthy improvement concerns the supply of molten substance to the mouth gap of the coating head.
  • the main chamber is continuously connected to the mouth gap. If the melted substance is introduced into the main chamber, the already melted substance flows through the area of the mouth gap near the inlet of this substance when the substance has not even reached the distant area of the mouth gap.
  • a control element which is arranged in the main chamber and / or a separate throttle chamber, is used for this purpose.
  • this control element can be a half-cylinder, which causes the mouth gap to close. If this half-cylinder is rotated, the region of the mouth gap which is remote from the inlet of the substance opens first. When the control element is turned further, the entire mouth gap is successively opened retrospectively. As a result, the mass order is balanced.
  • the control element is in a separate throttle chamber, its axis of rotation should be arranged in the plane of a wall of the mouth gap.
  • a substrate 1 to be coated runs into a coating gap 2 from a supply roller (not shown in more detail).
  • This coating gap 2 is formed by a perforated cylinder 3, in particular a metal cylinder, and a counter-pressure roller 4.
  • the counter-pressure roller 4 is preferably made of elastic material.
  • the distance between the axis of rotation A of the counter-pressure roller 4 and the axis of rotation B of the cylinder 3 is smaller than the sum of the radii of the cylinder 3 and the counter-pressure roller 4.
  • the elastic counter-pressure roller 4 is deformed in the region of the coating gap 2 by the pressure of the cylinder 3. This deformation is of course also given if, in the narrower sense, no coating gap is formed between cylinder 3 and roller 4 without a substrate.
  • a coating head 5 presses against the inner surface 6 of the cylinder 3 from the inside of the cylinder 3.
  • a contact surface 8 is formed around an opening gap 7 of the coating head 5 on both sides of the opening gap 7, this contact surface 8 having a radius r1, which is larger than the radius r of the cylinder 3.
  • the substrate 1 After the coating gap 2, the substrate 1 still runs a certain distance on the cylinder 3, then lifts off and loops around a roller 9.
  • the coating head 5 should be able to be subjected to heat by heating elements 10, this exposure being controlled by a control unit 11. Furthermore, the mouth gap 7 in the coating head 5 is preceded by a main chamber 12, which is connected via corresponding connection channels 13 or feed lines 14 to a source for molten substance (not shown). A 3-way valve 15 can be switched into line 14, via which line 14 is alternately connected to the source of coating substance or to a vacuum pump 16.
  • the cylinder 3 itself becomes a heat source.
  • the cylinder 3 becomes a resistor that heats itself through the connection.
  • the connection values may be around 2-10 volts and 700-900 ⁇ .
  • Slip contacts 18, which are only shown schematically, are suitable for transmitting the electrical energy. Appropriate insulation should then be provided towards the coating head 5 in the area of the contact surface 8.
  • the design of the cylinder 3 as an independent heat source has significant advantages with regard to the quality of, for example, the applied spot coating. At the points there are hardly any tails protruding upwards, as was the case with the coating processes known to date.
  • the coating substance Because of the mouth area of the coating head (no doctor blade), the coating substance needs to have a lower moisture content. This is then evaporated faster and more completely by the heated cylinder, so that the liquid content of the substance can be drastically reduced. I.e. the coating substance is already "baked” to a certain extent, which also increases the quality of the coating.
  • the area between cylinder 3 and roller 9 is assigned a device 19 for removing threads, which is only indicated schematically.
  • This device 19 can be designed mechanically, but it then has considerable disadvantages.
  • the "thread cutting" should preferably be done by heat, with every conceivable heat source being intended to be encompassed by the inventive concept.
  • a laser beam will preferably be used as a special heat source.
  • the absorption spectrum of this laser beam should correspond approximately to the emission spectrum of the coating substance, whereby the substance is also changed and influenced by the laser beam, that is to say in particular is crosslinked. This in turn can increase the adhesive force, the point is held together like a net and does not flow apart.
  • the roller 9 is to be followed by a heat zone 20 which is also only shown schematically.
  • a heat zone 20 which is also only shown schematically.
  • small dots are formed on the dots, for example during the dot coating by a thermoplastic substance. It has been found that when the coated substrate 1 is passed through a heat zone 20, these tails are drawn in, and this in turn significantly improves the quality of the coating.
  • FIG. 1 Another embodiment of a coating head 5a is shown in FIG.
  • a control element 23 is inserted into the main chamber 12, which controls the passage of melted substance from the main chamber 12 to the orifice gap 7.
  • this control element 23 consists of a half cylinder 24 which can be rotated about its longitudinal axis C.
  • FIG. 3 shows that part of this half cylinder 24 has a conical cut 25.
  • the half cylinder 24 is inserted into the main chamber 12 so that its end with the greatest abrasion is far from the inlet of the substance into the main chamber 12.
  • an opening first takes place far from the inlet of the substance. The substance is thus forced to penetrate as deep as possible into the main chamber 12 so that the mass application can be compensated for over the entire length of the orifice gap 7.
  • the shape and length of the conical section 25 is only indicated schematically in FIG. 3. Depending on the requirements and depending on, for example, the viscosity of a substance, this form can be different.
  • the idea of the invention also includes an improvement of the cylinder 3 itself.
  • a cylinder 3a according to FIG. 4 not only has openings 26 for spot coating, but the individual openings 26 are connected to one another by channels 28 formed in the surface 27 of the cylinder 3a. This results in a lattice-like coating application.
  • heat pipes 29 are arranged in the main chamber 12.
  • a hot oil is guided so that the coating substance in the main chamber 12 is kept at a certain heat level.
  • control element 23a is not in the main chamber 12 but in a separate throttle chamber 30.
  • the control element 23a is shown in the closed position for the orifice gap 7. Its longitudinal axis C preferably lies in the plane of a wall 31 of the mouth gap 7.
  • a vacuum chamber 32 should therefore be connected upstream of the orifice gap 7 and can be evacuated via a corresponding line 33.
  • the air is evacuated from these openings 26 so that they do not prevent the passage of the coating substance. This also significantly improves the quality of the coating itself.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)
EP90102857A 1989-02-22 1990-02-14 Procédé et dispositif pour appliquer des substances liquides, pâteuses ou plastiques sur un substrat Expired - Lifetime EP0384278B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3905342 1989-02-22
DE3905342A DE3905342A1 (de) 1989-02-22 1989-02-22 Verfahren und vorrichtung zum auftragen von fluessigen, pastoesen oder plastischen substanzen auf ein substrat

Publications (3)

Publication Number Publication Date
EP0384278A2 true EP0384278A2 (fr) 1990-08-29
EP0384278A3 EP0384278A3 (fr) 1991-12-04
EP0384278B1 EP0384278B1 (fr) 1994-12-14

Family

ID=6374615

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90102857A Expired - Lifetime EP0384278B1 (fr) 1989-02-22 1990-02-14 Procédé et dispositif pour appliquer des substances liquides, pâteuses ou plastiques sur un substrat

Country Status (3)

Country Link
US (1) US5122219A (fr)
EP (1) EP0384278B1 (fr)
DE (2) DE3905342A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001081085A1 (fr) 2000-04-22 2001-11-01 Beiersdorf Ag Procede et dispositif pour appliquer des liquides tres visqueux
WO2001081007A1 (fr) 2000-04-22 2001-11-01 Beiersdorf Ag Procede pour appliquer des substances liquides, pateuses ou plastiques sur un substrat
EP1181987A2 (fr) 2000-08-16 2002-02-27 Beiersdorf Aktiengesellschaft Procédés pour un revêtement au moins partiel de substrats
US6805905B2 (en) 2000-08-02 2004-10-19 Beiersdorf Ag Method for applying hot-melt pressure sensitive adhesives to a backing material

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5540673A (en) * 1989-01-31 1996-07-30 The Procter & Gamble Company Refastenable mechanical fastening system
SK145093A3 (en) * 1991-06-21 1994-12-07 Procter & Gamble Screen process printing production method of mechanical connecting system with azimuthal inclined tips for repeated fastening
DE4205682A1 (de) * 1992-02-25 1993-08-26 Berrenbaum Gmbh Vorrichtung und verfahren zum bedrucken von materialbahnen
US5325569A (en) * 1992-10-30 1994-07-05 The Procter & Gamble Company Refastenable mechanical fastening system having particular viscosity and rheology characteristics
US5300058A (en) * 1992-12-10 1994-04-05 The Procter & Gamble Company Disposable absorbent article having an improved mechanical fastening system
US5392498A (en) * 1992-12-10 1995-02-28 The Proctor & Gamble Company Non-abrasive skin friendly mechanical fastening system
US6139479A (en) * 1998-02-23 2000-10-31 Reynolds Consumer Products, Inc. Apparatus and method for manufacture of containers of variable length
US6770240B1 (en) * 1999-05-21 2004-08-03 Microfibres, Inc. System and method for air embossing fabrics utilizing improved air lances
EP1214468A1 (fr) 1999-09-21 2002-06-19 Microfibres, Inc. Tissus maroquines floques et procedes de fabrication
ES2239152T3 (es) * 2000-08-03 2005-09-16 Microfibres, Inc. Sistemas y procedimientos para estabilizar la rotacion de cliches de estampado usados para tejidos de estampado por aire.
TW201249633A (en) * 2011-06-03 2012-12-16 jie-han Lin Resin filling device, mold, and method thereof
EP2679112A1 (fr) 2012-06-26 2014-01-01 3M Innovative Properties Company Procédé de fabrication de fixations et toiles de précurseurs, élément de fixation et toile de précurseur
DE202012009804U1 (de) * 2012-10-15 2014-01-16 Düspohl Maschinenbau Gmbh Vorrichtung zum Auftragen von Flüssigkeit
CN109501445A (zh) * 2018-11-19 2019-03-22 磐安县宸熙工艺品有限公司 一种蓝印花布生产设备
CN109484005A (zh) * 2018-11-21 2019-03-19 磐安县宸熙工艺品有限公司 一种用于蓝印花布自动上浆除桨的系统
CN109530148A (zh) * 2018-11-23 2019-03-29 磐安县宸熙工艺品有限公司 用于蓝印花布加工的生产线
CN109537313A (zh) * 2018-12-17 2019-03-29 磐安县宸熙工艺品有限公司 一种蓝印花布的加工工艺
WO2024144943A1 (fr) * 2022-12-31 2024-07-04 Kimberly-Clark Worldwide, Inc. Procédé et appareil de traitement de bande

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988003442A1 (fr) * 1986-11-10 1988-05-19 Volker Ludwig Dispositif d'application de substances fluides, pateuses ou plastiques sur des substrats
DE8813088U1 (de) * 1988-10-18 1988-12-01 MAN Roland Druckmaschinen AG, 6050 Offenbach Druckwerk für eine Offsetrotationsdruckmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1577888A1 (de) * 1965-08-24 1969-07-31 Hesselmann Planatolwerk H Vorrichtung zum Auftragen von fluessigen Substanzen,insbesondere Klebstoff
US3930923A (en) * 1970-08-31 1976-01-06 Milprint, Inc. Nylon extrusion coating
DE2123200A1 (fr) * 1971-03-25 1972-09-28
HU191741B (en) * 1981-07-21 1987-04-28 Billeter Kunststoffpulver Ag Method and apparatus for applying partial surface layers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988003442A1 (fr) * 1986-11-10 1988-05-19 Volker Ludwig Dispositif d'application de substances fluides, pateuses ou plastiques sur des substrats
DE8813088U1 (de) * 1988-10-18 1988-12-01 MAN Roland Druckmaschinen AG, 6050 Offenbach Druckwerk für eine Offsetrotationsdruckmaschine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001081085A1 (fr) 2000-04-22 2001-11-01 Beiersdorf Ag Procede et dispositif pour appliquer des liquides tres visqueux
WO2001081007A1 (fr) 2000-04-22 2001-11-01 Beiersdorf Ag Procede pour appliquer des substances liquides, pateuses ou plastiques sur un substrat
US6805905B2 (en) 2000-08-02 2004-10-19 Beiersdorf Ag Method for applying hot-melt pressure sensitive adhesives to a backing material
EP1181987A2 (fr) 2000-08-16 2002-02-27 Beiersdorf Aktiengesellschaft Procédés pour un revêtement au moins partiel de substrats

Also Published As

Publication number Publication date
EP0384278B1 (fr) 1994-12-14
EP0384278A3 (fr) 1991-12-04
DE59007967D1 (de) 1995-01-26
US5122219A (en) 1992-06-16
DE3905342A1 (de) 1990-08-23

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